Completed in March of 2014, Kusukusu [...] is a marvelous feat of architecture, engineering and technology. Working with Hiroshi Nakamura of NAP Architects, the team came in and 3D-scanned hundreds of points on the tree. Based on that 3D data they then created a steel trellis that threaded through the tree, interlocking perfectly [...]. What’s amazing is that the treehouse in its entirety, never touches the tree. It’s completely self-standing so as to not harm the tree.
— spoon-tamago.com

Here are a few more images of the stunner of a treehouse in Atami, Japan designed by master treehouse builder Takashi Kobayashi in collaboration with NAP Architects.

To learn more and see the complete set of photos, head over to Spoon & Tamago.